The Medicine cat's Den is the place where all the sick or indjured cats of RiverClan go for treatment. The Medicine Cat and their apprentice sleep here in an underground den, the floor inside is sandy and full of hollowed out places and notches for herbs or berries. Cats from long ago have pushed large pebbles into the walls giving the illusion it was made of solid rock. This keeps the moisture out so it doesn't spoil any of the herbs or berries.